Improvement in locking-latches



JEREMIAH J. KING, on NEW YORK N. Y.

IMFROVEMENT iN LOCKINGLATCHES.

Specification forming part of Letters Patent No. 192,515, dated June 26,1877 application filed June 14, 1877. 7

To all whom it may concern:

Be it known that I, JEREMIAH J. KING, of the city, county, and State ofNew York, have invented a new and useful Improvement in Locks, whichinvention is fully set forth in the following specification, referencebeing had to the accompanying drawing, in which- Figure 1 represents arear view of my lock when the lock-plate is removed. Fig. 2 is a topview thereof. Fig. 3 is a rear view, showing a transverse section of thecylinders in the plane of the line .00 m, Fig. 4. Fig. 4. is an endview, showing a longitudinal central section of the cylinders. Fig. 5 isan end view of the external adjustable cylinder. Fig. 6 is a side viewthereof. Fig. 7 shows the form of key used in connection with my lock.

Similar letters indicate corresponding parts.

My invention relates to that class of latchlocks having an extensiblecylinder, which is passed through a door or other object, and which isadapted to doors of difierent thicknesses. It consists in thecombination of a stationary internal cylinder projecting from thelock-case with a non-rotating external cylinder, adapted to movelengthwise on said external cylinder, and having an adjusting-screw orother equivalent device for fastening it in place, and with apartially-rotating tumbler-case arranged on the interior of saidexternal cylinder, so as to move therewith, and having a longitudinalshoulder which engages a segmental arm projecting from the dog of thelocking mechanism in such a manner that the tumbler-case is susceptibleof a longitudinal movement, together with the external cylinder, whileat the same time, when the tumbler-case is rotated, the segmental armand dog partake of such movement, and thereby the locking mechanism isactuated.

In the drawing, the letter A designates the case of my lock, to which issecured a cylinder, B, in such a manner as to project therefrom at rightangles, the case being provided with an opening equal to the internaldiameter of the cylinder at the place where it is located. On thecylinder B is fitted and placed a secondary cylinder, 0, through theside of which passes an adjusting-screw, D, so that when the externalcylinder 0 is moved to the desiredposition it can be held by tighteningthe screw D. In order to prevent the external cylinder 0 from rotating,it is provided with a slot, or, through which passes a guide-pin, I),(see Fig. 6,) but this purpose can also be accomplished by arranging theset-screw D in a slot.

In the interior of the external cylinder O is arranged a case, E, whichcarries a series of tumblers, F, this case E having a segmental form,and the tumblers F being made to project therefrom and out through theexternal cylinder 0, which is provided with a slot, G, for alongitudinal movement of the tumblers, and with recesses c for a lateralor rotating movement thereof. When the tumblers F are rotated the case Epartakes of their movement. In the example shown the tumblers F areconstructed and arranged to be actuated by a key of the general formshown in Fig. 7, and which has a corrcsponding'form on both of itsedges.

The tumbler-case E is connected to the external vcylinder O by means ofa pin, 0, (see Fig. 4,) projecting from the cylinder, and which catchesin a groove formed in part of the circumference of the case, so that thecase is permitted to rotate, and at the same time moves with theexternal cylinder in the direction of its length.

The tumbler-case E projects into the inner cylinder B, and it isprovided with a shoulder,

d, (best seen in Fig. 3,) which extends the entire length thereof, andis made to catch behind one of the longitudinal edges of an arm, H,formed on or secured to a dog, I, (see Fig. 1,) which is arranged toactuate the latch J of the lock. The arm H is rigid, and has a segmentalform in cross-section, so as to fit between the inner cylinder B and thetumblercase E, where it is located.

It will be noticed that when the tumblercase E is rotated the segmentalarm H is caused to partake of its movement through the shoulder 61, andthus thedog I is swung on its axis, and the latch J is drawn back. Asbefore stated, the tumbler-case E partakes of the movement of theexternal cylinder 0, and when this cylinder is moved backward or for.-ward, as the case may be, the shoulder at of the case slides along theedge of the segmental arm H, so that said case is adapted to rotate thearm in any position of the external cylinder.

The important advantage of my lock is the simplicity of itsconstruction, and the consequent low cost at which it can bemanufactured.

It is obvious that my invention may be "applied to a bolt-lock as wellas to latches without departure from my invention.

What I claim as new, and desire to secure by Letters Patent, is

The combination, in a lock, of an internal stationary cylinderprojecting from the lock-" case, with a non-rotating external cylinder,

adapted to move lengthwise on said internal.

cylinder, and having an adjusting-screw or other equivalent device forfastening it in place, and with a partially-rotating tumblercasearranged on the interior of said external cylinder, so as to movetherewith, and having a longitudinal shoulder which engages with asegmental arm projecting from the dog of the locking mechanism,substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand.this 18th day of January, 1877.

JEREMIAH J. Witnesses:

E. F. KASTENHUBEB, CHAS. WAHLERS.

